Hormonal and neuroendocrine control of reproductive function in teleost fish.

Abstract

Reproduction is one of the important physiological events for the maintenance of the species. Hormonal and neuroendocrine regulation of teleost requires multiple and complex interactions along the hypothalamic-pituitary-gonad (HPG) axis. Within this axis, gonadotropin-releasing hormone (GnRH) regulates the synthesis and release of gonadotropins, follicle-stimulating hormone (FSH), and luteinizing hormone (LH). Steroidogenesis drives reproduction function in which the development and differentiation of gonads. In recent years, new neuropeptides have become the focus of reproductive physiology research as they are involved in the different regulatory mechanisms of these species' growth, metabolism, and reproduction. However, especially in fish, the role of these neuropeptides in the control of reproductive function is not well studied. The study of hormonal and neuroendocrine events that regulate reproduction is crucial for the development and success of aquaculture.

Environmental Conditions along Tuna Larval Dispersion: Insights on the Spawning Habitat and Impact on Their Development Stages

“…In this, to limit the effects of unpredictability, natal homing behavior is beneficial and is considered a strategy used by many organisms, including Tunas [12,13], to increase the likelihood of reproductive success and maximize the larval survival. Tunas follow specific signals to commence reproductive events together, but this depends on species [14][15][16][17]. The spawning behavior of Bluefin Tuna, in particular, can respond to environmental or physical signs, or a mix of both [18].…”